$OpenBSD: patch-modules_log-prelude_log-prelude_hpp,v 1.1 2017/05/22 16:26:49 espie Exp $

Index: modules/log-prelude/log-prelude.hpp
--- modules/log-prelude/log-prelude.hpp.orig
+++ modules/log-prelude/log-prelude.hpp
@@ -34,6 +34,7 @@
 #endif
 
 #include <string>
+#include <stdlib.h>
 
 #include "Module.hpp"
 #include "ModuleManager.hpp"
